Printing-surface for color-printing.



- No Drawing.

NICOLAI WASILIEVITCH TURKIN, OF-JVIOSCOW, RUSSIA.

PRINTING-SURFACE FOR COLOR-PRINTING.

TURKIN, a subject of the Czar of Russia, re-

siding at Moscow, Russia, have invented certain new and usefulImprovements in Printing-Surfaces for Color-Printing, of which thefollowing is a specification.

This invention is for improvements in or relating to printing surfacesfor color printing purposes for the manufacture of which there areemployed coloring matters of the kind described in the specification ofmy copending application Serial No. 811,17 3, filed January 9, 1914.

According to the process described in the specification of my co-pendingapplication referred to above, coloring matters or dyestuffs suitablefor any desired painting or printing purposes are obtained from anydesired color pigments by completely dissolving the same in a suitablecarrier, the base of which is alizarin (Turkey red) oil, so as toproduce a colloidal solution of the pigment therein. The pigment carrieris preferably prepared by heating together alizarin (Turkey red) oil,and either or both basic aluminium acetate and/or salts of metals of thealkaline earths or alkalis, so as to produce a composition insoluble inWater; with this carrier the pigment is incorporated and according tocircumstances naphthalene and other substances can be added to theproduct all as described in the specification of my aforementionedco-pending application 811,173 filed January 9, 1914.

According to the present invention a printing surface for color printingpurposes is composed of a composition of matter consisting of a colorpigment colloidally distributed in a carrier having a base of alizarinoil, the said carrier being insoluble in water.

A further feature of this invention consists in forming a printingsurface for color printing purposes of printing elements such as pins orplates of the previously mentioned composition containing coloringmatter.

For the manufacture of a red color suitable for printing purposes thereare first of all prepared three mixtures consisting of 1. 100 gms. basicaluminium acetate and 200 gms. alizarin (Turkey red) oil. 2. 10 gms.Biebrich scarlet and 100 gms. alizarin (Turkey red) oil. 3. 20 gms.naphthalene and 20 gms. fish (train) oil. These three mixtures arecombined together, and a mixture of Specification of Letters Patent.

Patented Dec. 1141, 11915.

Application filed January 12, 1914. Serial No. 811,552.

resins, consisting of 50 gms. Canada balsam, 250 gms. Venetianturpentine, 100 gms. copal resin, 50- gms. pine resin, 25 gms. elemiresin, 50 gms. shellac, is added to it, with constant stirring andheating. Moreover, 25 gms. glucose previously mixed if desired withpowdered resins, are added to the mass. The mass isiagain boiled, untilit becomes solid on cooling. With this coloring mass is combined a thickfluid resin mixture previously prepared by mixing 125 gms. fish (train)oil, 650 gms. copal resin with 225 gms. spirits of wine (95%) or someother (preliminary) solvent, and boiling the mixture in question. Inthe' event of the mass being too solid for tIGatITl'Ilt,-SOII16 solvent,such as for instance toluol, can be added to it, until it acquires thedesired consistency. In the same Way any desired color pigment can beintroduced into the same or a similar carrier substance.

Throughout this specification, alizarin oil is used to denote theneutralized products obtained by treating with sulfuric acid not onlyolive oil, but also other oils, such for example as castor oil, cottonseed oil and other oils containing glycerids of palmitic acid, oleicacid, etc.

Color bodies obtained in the manner described by dissolving pigments inlake-like masses, can be utilized for obtaining impressions in severalcolors from a single block, the colors in question being put on in thearrangement or pattern required for the printing, on a single printingplate, and for the purpose of printing, moistened with a solvent for thepigment carrier. The application of the various colors to the printingplate can be eifected either in the ordinary well known manner, that isby putting them on a printing plate in accordance with the desired colorpattern, by means of a brush, spatula or the like, or by forming thedesired color pattern in the same way as mosaics, from color bars orplates. When such mosaic-like arrangement of color bars is used, thesaid bars could be introduced into a printing frame, in the same way asprinting type is' set by type-setting machlnes, by machines analogous tothe latter. Whateyer method be adopted hoWever-fonprepanng the printingplates or blocks it is essential for insuring a good result, that thecolor bodies arranged next to each other should be of such a naturethat, even when a solvent for the pigment carrier is put on, theyv Btoproduce a diffusion up to a certain degree,

in order to soften the gradation of colors.'

This can be effected by moistening the adjoining surfaces of thedifferent colored color zones with essential oils, such for ex-v ampleis aniseed oil, lemon oil, and the like. Conversely the capacity ofdiffusion of the adjoining color layers can be destroyed by providingthe surfaces of the said adjoining color la ers with a coating ofalizarin (Turkey red) oil and ammonia.

Owing to the fact'that the pigment is colloidally dissolved in the colorcarrier it becomes possible to carry out color printing by simplymoistening the color coating with a solvent for the carrier inclosingthe pigment, as the carrier and a greater or smaller quantity of pigmentdissolved in the same are simultaneously removed by solution.

For the purpose of printing, the color is placed on a suitable printingsurface, or pinor plate-like bodies are prepared from the same, the endsurfaces of which correspond to the color patches to be printed, whilethe sides are bounded by cylindrical surfaces. The color pins can be puttogether so as to form any desired patterns, in the manner analogous tothe setting of types, by

means of devices corresponding to type-' setting machines. The singletype-bars (or elements) can be obtained from color bars or threads, bycutting them off from the latter. The control of such a color barsetting machine can be effected by means of pattern cards, in the sameWay as used in the so-called Jacquard weaving looms.

A suitable solvent for the coloring matter when printing from blocksprovided with one color layer, can be obtained in the followlng manner:By way of example, the following mixture is prepared: 75 gms. spirits ofwine (95%), 155 gms. spirits of lavender, 40 gms. alizarin (Turkey red)oil, 150 gms. methyl alcohol, 120 s. toluol, 10 gms. xylol, 15 gms.paraffin 1n the form of a solution in xylol and of the consistency ofmilk, 190 gms. glacial acetic acid, 40 gms. petroleum ether, 25 gms.sulfuric ether, 50 gms. acetic ether, 40 gms. creosote, 75 gms. ammonia(25%), 15 gms. of an alcohol solution, of milk consistency, of equalquantitles of copal resin and fish (train) oil are all boiled together.The last mentioned mixture is used for moistening the color coating onthe blocks for the purpose ofproducing impressions on paper, fabric orother background. I This can be effected by moistening, with thesolution in question,

the surfaces on which the printing is to be done, and in that Waybringing about indirectly a moistening of the printing blocks.

What I claim as my invention and desire to secure by Letters Patentis 1. A printing surface for color printing purposes, comprising acolloidal solution of a color pigment in a composition of matter havinga base of alizarin oil, the said composition being insoluble in water.

2. A printing surface for color printing purposes, comprising acomposition of matter produced by, forming a colloidal solution of acolor pigment by heating the color pigment with alizarin oil andmetallic salts until the whole solidifies on cooling.

3. A printing surface for color printing purposes, comprising acomposition of matter produced by forming a colloidal solution of acolor pigment by heating the color pigment with alizarin oil and basicaluminum acetate until the whole solidifies on cooling.

4:. A: printing surface for color printing purposes, comprising acomposition of matter produced by forming a colloidal solution of acolor pigment by heating the color pigment with alizarin oil, basicaluminum acetate and naphthalene? until the whole solidifies on cooling.I

5. A printing surface for color printing purposes, comprising printingelements formed of a colloidal solution of a color pigment in acompositionof matter having a in water.

8. A printing surface for color printing purposes, comprising printingelements formed of a colloidal solution of a color,

pigment in a composition of matter having a base of alizarin oil, basicaluminum acetate and naphthalene, the said composition being insolublein water.

In testimony whereof I have signed my name to this ecification in thepresence of two subscribing witnesses.

NIGOLAI WASILIEVITGH TUBKIN- Witnesses:

CHRISTIAN Enmm'r, LYDIA Rom.

